For as long as she can remember, 12-year-old Emily Windsnap has lived on a boat. And, oddly enough, for just as long, her mother has seemed anxious to keep Emily away from the water. But when Mom finally agrees to let her take swimming lessons, Emily makes a startling discovery about her own identity, about the mysterious father she's never met, and about the thrilling possibilities and perils shimmering deep below the water's surface.

Alex Halford's rock star husband, Glenn, steals away in the middle of the night, leaving her with their two boys, a mountain of debt, and one person to turn to - his lifelong friend and bandmate, David Callahan. David helps Alex pick up the pieces of her shattered life, happy to have any time with the woman he's loved for 17 years. Every moment with her is ripe with opportunity, and every last idea running through his mind would destroy his brotherly bond with Glenn.

They say you can never go home again, and for Persephone Fraser, ever since she made the biggest mistake of her life a decade ago, that has felt too true. Instead of glittering summers on the lakeshore of her childhood, she spends them in a stylish apartment in the city, going out with friends, and keeping everyone a safe distance from her heart. Until she receives the call that sends her racing back to Barry’s Bay and into the orbit of Sam Florek—the man she never thought she’d have to live without.

Waverly Lyons has been caught in the middle of her parents’ divorce for as long as she can remember. This summer, the battle rages over who she’ll spend her vacation with, and when Waverly’s options are shot down, it’s bye-bye Fairbanks, Alaska, and hello Holden, Florida, to stay with her aunt. Coming from the tundra of the north, the beach culture isn’t exactly Waverly’s forte. The sun may just be her mortal enemy, and her vibe is decidedly not chill. To top it off? Her ability to swim is nonexistent.

Samantha Kingston has it all: the world's most crush-worthy boyfriend, three amazing best friends, and first pick of everything at Thomas Jefferson High—from the best table in the cafeteria to the choicest parking spot. Friday, February 12, should be just another day in her charmed life. Instead, it turns out to be her last. Then she gets a second chance. Seven chances, in fact.

Seventeen-year-old Ashlyn Lanski is tired of her boring, single life. Swimming and spending time with Tatiana, her best friend, are her only sanctuary. The girls plan to leave their drab lakeside town far behind for college, and Ash hopes to finally ditch her longtime crush for Finley, Tatiana's twin brother. But when Tatiana and her family fail to return home after a family emergency, Ashlyn chooses to do something drastic to find them

Sixteen-year-old Miranda Merchant is great at science and not so great with boys. After major drama with her boyfriend and (now ex) best friend, she's happy to spend the summer on small, mysterious Selkie Island, helping her mother sort out her late grandmother's estate. There Miranda finds new friends and an island with a mysterious, mystical history, presenting her with facts her logical, scientific mind can't make sense of. She also meets Leo, who challenges everything she thought she knew.

Gwen Castle's Biggest Mistake Ever, Cassidy Somers, is slumming it as a yard boy on her idyllic Nantucket-esque island this summer. He's a rich kid from across the bridge in Stony Bay, and she hails from a family of fishermen and housecleaners who keep the island's summer people happy. Gwen worries a life of cleaning houses will be her fate too, but just when it looks like she'll never escape her past - or the island - Gwen's dad gives her some shocking advice.

Camp Alpine Lake is the only place where Goldie Easton feels safe—the camp is the lifeline of the small town she lives in. Alpine Lake provides jobs, money and prestige to the region. Her parents work there so Goldie is one of the few townies who have reaped the rewards of living so close to the summer camp, with its five-figure tuition and rich kids who have been dumped there for eight weeks by their powerful parents.

Jeremy is not excited about the prospect of spending the summer with his dad and his uncle in a seaside cabin in Oregon. It's the first summer after his parents' divorce, and he hasn't exactly been seeking alone time with his dad. He doesn't have a choice, though, so he goes...and on his first day takes a walk on the beach and finds himself intrigued by a boy his age running by. Eventually, he and Runner Boy (Evan) meet--and what starts out as friendship blooms into something neither boy is expecting... and also something both boys have been secretly hoping for.

Emma and her friend Chloe are spending vacation in Florida. When Emma (literally) runs into a hot guy named Galen on the beach, little does she know he's a prince of the Syrena. Galen and Emma both feel something strange - is it attraction? - and Galen suspects that Emma might well be the girl he's heard of - a human who can communicate with fish. What follows is a deadly scene with a shark in which Galen witnesses Emma's gifts. He must know more about her, and follows her back to New Jersey, and high school.

16-year-old Mara Westray has just lost her mother, and now, being shipped off to live with the father she doesn’t know is not how she imagined grieving. She's already counting down the days until she turns 18 and can leave the tiny island of Swans Landing. But from the moment she steps off the ferry, nothing is as ordinary as it looks. As she tries to unravel the events that led to her mom fleeing the island 16 years ago, Mara finds that the biggest secret of all is only the beginning.

In Savannah Espinoza's small New Mexico hometown, kids either flee after graduation or they're trapped there forever. Vanni never planned to get stuck - but that was before her father was diagnosed with Huntington's disease, leaving her and her mother to care for him. Now she doesn't have much of a plan at all: living at home, working as a performing mermaid at a second-rate water park, distracting herself with one boy after another. That changes the day she meets Leigh.

The Garretts are everything the Reeds are not: loud, numerous, messy, affectionate. And every day from her balcony perch, 17-year-old Samantha Reed wishes she was one of them...until one summer evening, Jase Garrett climbs her terrace and changes everything. As the two fall fiercely in love, Jase's family makes Samantha one of their own. Then in an instant, the bottom drops out of her world and she is suddenly faced with an impossible decision. Which perfect family will save her? Or is it time she saved herself?

When Abbey’s best friend, Kristen, vanishes at the bridge near Sleepy Hollow Cemetery, everyone else is all too quick to accept that Kristen is dead, and rumors fly that her death was no accident. Abbey goes through the motions of mourning her best friend, but privately, she refuses to believe that Kristen is really gone. Then she meets Caspian, the gorgeous and mysterious boy who shows up out of nowhere at Kristen’s funeral, and who keeps reappearing in Abbey’s life. Caspian clearly has secrets of his own, but he’s the only person who makes Abbey feel normal again.